Write down both the Serial Number (S/N) and the Assembly Number (A/N) . The assembly number is highly useful if the serial number lookup fails, as it identifies the exact mechanical configuration. Navigate to the Portal: Open the Allison HUB link.
Once you have looked up your serial number in the appropriate tool, here is what you can typically expect to find: allison transmission serial number lookup link
Use a mild degreaser to make the numbers highly visible. Do not use heavy abrasives. Write down both the Serial Number (S/N) and
To help find the exact specifications or documentation you need right now, could you share a bit more context? Tell me: Once you have looked up your serial number
| Serial Number Prefix (First 3 chars) | Typical Model Series | | :--- | :--- | | B66, B67, B68 | 1000/2000 Series (5-speed) | | C93, C94, C95 | 3000 Series (6-speed) | | X12, X13, X14 | 4000 Series (7-speed) | | 69xxxxx (Legacy) | HT700 or MT600 Series |
If your serial number is worn down, obscured, or returns an error online, the official dealer network has direct back-end access to the factory build sheets. allisontransmission.com